Power corrections in charmless B decays
| dc.creator | Pham, T. N. | |
| dc.date | 2004-11-02 | |
| dc.date.accessioned | 2026-07-07T03:53:49Z | |
| dc.date.available | 2026-07-07T03:53:49Z | |
| dc.description | Power corrections seem to play an important role in charmless B decays as indicated by recent analysis using QCD Factorization. In this talk, I would like to report on a recent work on power corrections in charmless B decays. By using the ratio of the branching fraction of $B^+ \to π^+ K^{\ast 0}$ to that of $B^0 \to π^- ρ^+$, for which the theoretical uncertainties are greatly reduced, it is shown in a transparent manner that power corrections in charmless B decays are probably large and that the $B^0 \to K^- ρ^+$ decay could be explained with the annihilation term included. For ratios of direct CP asymmetries, QCD Factorisation with the annihilation terms included would predict the direct CP asymmetry of $B \to π^+ π^-$ to be about 3 times larger than that of $B \to π^\pm K^\mp$, with opposite sign. In particular, the large measured value for $B \to π^\pm K^\mp $ CP asymmetry implies naturally a corresponding large $B \to π^+ π^-$ CP asymmetry as observed by Belle. Experimentally any significant deviation from this prediction or possibly the importance of long-distance rescattering effects. | |
| dc.description | Talk given at the QCD Euroconference 2004, Montpellier 5-9 July 2004., LateX, 7 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0411033 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0411033 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43988 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Power corrections in charmless B decays | |
| dc.type | text |